Impeller pumps
Impeller pumps by ZUWA are especially easy to maintain and cheap to run. Thanks to the flexible impeller the pumps are capable to move solid content or convey highly viscous fluids.
The running wheels (flexible impellers) in our impeller pumps are available in different, always flexible materials to meet the requirements of many fluids. The impellers are not arranged centered in the elliptical housing. Due to the rotation of the impeller and therefore the bending of the impeller's blades a vacuum is created which sucks in the liquid. Because our impeller pumps are self-lubricating, only a rather short dry run is possible. After utilisation a longer dry-run is possible, but not recommendable.
ZUWA impeller pumps are available in several sizes with several drives and are made drom stainless steel, aluminum or plastic. We provide impellers made from NBR, EPDM, CR, FKM, FPM and TPU.
Our impeller pumps can be used with different drives: electric motors, air motors, belt drive, hydraulic motors, with a power drill or a cordless drill with an adapter.
HOW DOES A FLEXIBLE IMPELLER PUMP WORK?
The flexible impeller turns within an eccentrically formed casing creating a suction via the flexing of the impeller blades, which draws the fluid into the pump casing. The medium itself acts as a lubricant between the blades and the casing, therefore minimizing friction and allowing smooth fluid transfer. In order to avoid possible damages to the pump it is recommended to install dry run protection to each flexible impeller pump by ZUWA.
